James Alex M, Reynolds Jake, Reed Daniel G, Styring Peter, Dawson Robert
Department of Chemistry, University of Sheffield, Brook Hill, Sheffield S3 7HF, UK.
Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3DJ, UK.
Materials (Basel). 2021 Mar 25;14(7):1605. doi: 10.3390/ma14071605.
Functionalized hypercrosslinked polymers (HCPs) with surface areas between 213 and 1124 m/g based on a range of monomers containing different chemical moieties were evaluated for CO capture using a pressure swing adsorption (PSA) methodology under humid conditions and elevated temperatures. The networks demonstrated rapid CO uptake reaching maximum uptakes in under 60 s. The most promising networks demonstrating the best selectivity and highest uptakes were applied to a pressure swing setup using simulated flue gas streams. The carbazole, triphenylmethanol and triphenylamine networks were found to be capable of converting a dilute CO stream (>20%) into a concentrated stream (>85%) after only two pressure swing cycles from 20 bar (adsorption) to 1 bar (desorption). This work demonstrates the ease with which readily synthesized functional porous materials can be successfully applied to a pressure swing methodology and used to separate CO from N from industrially applicable simulated gas streams under more realistic conditions.
基于一系列含有不同化学基团的单体，制备了比表面积在213至1124 m²/g之间的功能化超交联聚合物（HCPs），并采用变压吸附（PSA）方法在潮湿条件和高温下对其进行CO捕获评估。这些网络显示出快速的CO吸收，在60秒内达到最大吸收量。将表现出最佳选择性和最高吸收量的最有前景的网络应用于使用模拟烟道气流的变压装置。发现咔唑、三苯甲醇和三苯胺网络仅经过两个变压循环（从20巴（吸附）到1巴（解吸））就能够将稀释的CO流（>20%）转化为浓缩流（>85%）。这项工作表明，易于合成的功能性多孔材料可以很容易地成功应用于变压方法，并用于在更现实的条件下从工业适用的模拟气流中分离CO和N₂。
